.myselect-class {
    background: #233E61;
    color: #59acdf;
    border-color: #59acdf;
}

.myselect-class .el-select-dropdown__item {
    color: #59acdf;
}

.myselect-class .selected {
    background: rgba(48, 147, 246, .5);
    color: #fff;
}

.myselect-class .el-select-dropdown__item.hover {
    background: rgba(48, 147, 246, .5);
    color: #fff;
}

.myselect-class .popper__arrow::after {
    border-bottom-color: #233E61!important;
}

.myselect-class .popper__arrow {
    border-bottom-color: #59acdf!important;
}